CodeSampleX

示例

jest-worker 30.4.1: PriorityQueue

已验证示例 — npm jest-worker 30.4.1: PriorityQueue. contract 在 node 22 · linux debian/x64 · docker 上运行并通过： PriorityQueue class is exported by jest-worker and…

sha256:5ee0e438df85bd57ebeb1583dc2512d3f8572290ccb8a82d90a2330603e8628b

本网络只提供一件事：能构建的样本。它在沙箱中运行并保留签名回执。它不评级、不担保——同样的代码能否在你的环境构建，它没有测量过。 提交了通过的契约回执的不同签名密钥数量。为 1 表示只有作者；大于 1 表示还有其他人构建过。密钥是自行生成的，背后没有注册身份，因此计的是密钥而非人。 MIT-0

执行证据

声明的环境与签名的运行分开呈现，你可以看到这个样本究竟运行了什么、在哪里运行。

证据依据
签名契约通过
验证回执
1
构建过它的签名密钥
1
声明的环境 node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

验证运行环境

环境 契约 阶段 运行日期
node 22 · linux debian/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22@sha256:8a34c4ab3ea2…		 2026-09-03

案例

HOW
目标
verify jest-worker.PriorityQueue in pkg:npm/jest-worker@30.4.1
包
符号
  • jest-worker.PriorityQueue
环境
node 22.23.2
创建时间
2026-09-03T05:16:32Z

契约

  1. PriorityQueue class is exported by jest-worker and instantiable with a computePriority callback
  2. computePriority callback receives task method name and arguments to calculate numeric priority
  3. enqueue without workerId enqueues tasks into shared queue and dequeue retrieves lower priority numbers first
  4. enqueue with workerId enqueues tasks into worker-specific queue and dequeue isolates tasks per worker
  5. dequeue prioritizes worker-specific tasks over shared tasks when they have the same priority
  6. dequeue returns null when both worker-specific and shared queues are empty

文件

  • PROMPT.md
  • csx.json
  • index.mjs
  • package-lock.json
  • package.json
  • spec.json
  • test/contract.mjs

下载源代码构件 (tar.gz)

源代码

PROMPT.md
Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify jest-worker.PriorityQueue in pkg:npm/jest-worker@30.4.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/jest-worker@30.4.1
Demonstrate these symbols/APIs:
  - jest-worker.PriorityQueue

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.
csx.json
{"case":{"caseId":"case:sha256:c0a9aadac742fde5a978aa3453573c2834dc4b66f629741c23cccedac6627b0e","contract":["PriorityQueue class is exported by jest-worker and instantiable with a computePriority callback","computePriority callback receives task method name and arguments to calculate numeric priority","enqueue without workerId enqueues tasks into shared queue and dequeue retrieves lower priority numbers first","enqueue with workerId enqueues tasks into worker-specific queue and dequeue isolates tasks per worker","dequeue prioritizes worker-specific tasks over shared tasks when they have the same priority","dequeue returns null when both worker-specific and shared queues are empty"],"goal":"verify jest-worker.PriorityQueue in pkg:npm/jest-worker@30.4.1","kind":"HOW","packages":["pkg:npm/jest-worker@30.4.1"],"schemaVersion":1,"symbols":["jest-worker.PriorityQueue"]},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","executionContext":"node","language":"javascript","libc":"glibc","libcVersion":"2.39","moduleSystem":"esm","os":"linux","osVersionBucket":"24","packageManager":"npm","packageManagerVersion":"10.9.8","runtime":"node","runtimeVersion":"22.23.2","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/jest-worker@30.4.1"],"schemaVersion":1,"subject":"pkg:npm/jest-worker@30.4.1","symbols":["jest-worker.PriorityQueue"],"verifierAdapter":"node-typescript@1"}
index.mjs
import { PriorityQueue } from 'jest-worker';

export { PriorityQueue };

/**
 * Instantiates a new PriorityQueue with the given priority computation function.
 *
 * @param {Function} computePriority - Function that receives (method, ...args) and returns numeric priority
 * @returns {PriorityQueue}
 */
export function createPriorityQueue(computePriority) {
  return new PriorityQueue(computePriority);
}

/**
 * Creates a mock child message task structure compatible with jest-worker QueueChildMessage.
 *
 * @param {string|number} id - Task identifier
 * @param {string} [methodName='runTask'] - Method name in the child message call
 * @param {Array<unknown>} [args=[]] - Arguments array
 * @returns {object} QueueChildMessage task
 */
export function createQueueTask(id, methodName = 'runTask', args = []) {
  return {
    request: [1, false, methodName, args],
    onStart: () => {},
    onEnd: () => {},
    onCustomMessage: () => {},
    id,
  };
}

/**
 * Enqueues a task into a PriorityQueue.
 *
 * @param {PriorityQueue} queue - Queue instance
 * @param {object} task - Task to enqueue
 * @param {number} [workerId] - Target worker ID
 */
export function enqueueTask(queue, task, workerId) {
  queue.enqueue(task, workerId);
}

/**
 * Dequeues the highest-priority task from a PriorityQueue for the given worker.
 *
 * @param {PriorityQueue} queue - Queue instance
 * @param {number} workerId - Worker ID
 * @returns {object|null} Next task or null
 */
export function dequeueTask(queue, workerId) {
  return queue.dequeue(workerId);
}
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}
package.json
{
  "name": "sample-jest-worker-priority-queue",
  "version": "1.0.0",
  "description": "Clean-room verification sample for jest-worker.PriorityQueue",
  "type": "module",
  "private": true,
  "license": "MIT-0",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "jest-worker": "30.4.1"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify jest-worker.PriorityQueue in pkg:npm/jest-worker@30.4.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/jest-worker@30.4.1"
  ],
  "symbols": [
    "jest-worker.PriorityQueue"
  ]
}
test/contract.mjs
import assert from 'node:assert/strict';
import {
  PriorityQueue,
  createPriorityQueue,
  createQueueTask,
  enqueueTask,
  dequeueTask,
} from '../index.mjs';

// Contract 1: PriorityQueue class is exported by jest-worker and instantiable with a computePriority callback
{
  assert.strictEqual(typeof PriorityQueue, 'function');
  const queue = createPriorityQueue((method, ...args) => 0);
  assert.ok(queue instanceof PriorityQueue);
  assert.strictEqual(typeof queue.enqueue, 'function');
  assert.strictEqual(typeof queue.dequeue, 'function');
}

// Contract 2: computePriority callback receives task method name and arguments to calculate numeric priority
{
  const queue = createPriorityQueue((method, basePriority) => {
    if (method === 'urgent') return 1;
    if (method === 'normal') return basePriority;
    return 100;
  });

  const taskNormal = createQueueTask('task-normal', 'normal', [10]);
  const taskUrgent = createQueueTask('task-urgent', 'urgent', []);
  const taskFallback = createQueueTask('task-fallback', 'other', []);

  enqueueTask(queue, taskFallback);
  enqueueTask(queue, taskNormal);
  enqueueTask(queue, taskUrgent);

  assert.strictEqual(dequeueTask(queue, 0), taskUrgent);
  assert.strictEqual(dequeueTask(queue, 0), taskNormal);
  assert.strictEqual(dequeueTask(queue, 0), taskFallback);
}

// Contract 3: enqueue without workerId enqueues tasks into shared queue and dequeue retrieves lower priority numbers first
{
  const queue = createPriorityQueue((method, priority) => priority);
  const taskLow = createQueueTask('task-low', 'run', [100]);
  const taskMed = createQueueTask('task-med', 'run', [50]);
  const taskHigh = createQueueTask('task-high', 'run', [10]);

  enqueueTask(queue, taskLow);
  enqueueTask(queue, taskHigh);
  enqueueTask(queue, taskMed);

  assert.strictEqual(dequeueTask(queue, 0), taskHigh);
  assert.strictEqual(dequeueTask(queue, 1), taskMed);
  assert.strictEqual(dequeueTask(queue, 2), taskLow);
  assert.strictEqual(dequeueTask(queue, 0), null);
}

// Contract 4: enqueue with workerId enqueues tasks into worker-specific queue and dequeue isolates tasks per worker
{
  const queue = createPriorityQueue((method, priority) => priority);
  const taskW0 = createQueueTask('w0-task', 'run', [10]);
  const taskW1 = createQueueTask('w1-task', 'run', [10]);

  enqueueTask(queue, taskW0, 0);
  enqueueTask(queue, taskW1, 1);

  assert.strictEqual(dequeueTask(queue, 0), taskW0);
  assert.strictEqual(dequeueTask(queue, 0), null);

  assert.strictEqual(dequeueTask(queue, 1), taskW1);
  assert.strictEqual(dequeueTask(queue, 1), null);
}

// Contract 5: dequeue prioritizes worker-specific tasks over shared tasks when they have the same priority
{
  const queue = createPriorityQueue((method, priority) => priority);
  const sharedTask = createQueueTask('shared-task', 'run', [10]);
  const workerTask = createQueueTask('worker-task', 'run', [10]);

  enqueueTask(queue, sharedTask);
  enqueueTask(queue, workerTask, 0);

  const first = dequeueTask(queue, 0);
  assert.strictEqual(first, workerTask);

  const second = dequeueTask(queue, 0);
  assert.strictEqual(second, sharedTask);
}

// Contract 6: dequeue returns null when both worker-specific and shared queues are empty
{
  const queue = createPriorityQueue((method, priority) => 0);
  assert.strictEqual(dequeueTask(queue, 0), null);
  assert.strictEqual(dequeueTask(queue, 1), null);
  assert.strictEqual(dequeueTask(queue, 42), null);
}

console.log('All jest-worker.PriorityQueue contract assertions passed.');

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